Hi,
I have some code that needs to be compiled with TFile.h and TTree.h
included.
When I compile on my own machine (SuSe 8.0, gcc 2.95.3) everything is
fine. But when i use another machine (debian, gcc 2.95.4) the comilation
gets stuck where a root object is constructed or deleted
42: TFile *outfile = new TFile (argv[2], "RECREATE");
46: TTree *tree = new TTree("nnfit", "NN result");
91: return 0;
output of compilation
g++ -g `root-config --cflags`
-I/cms/external/lcg/external/root/3.10.01/rh73_gcc32/include -c
nn2rootflux.cc
g++ nn2rootflux.o `root-config --libs`
-I/cms/external/lcg/external/root/3.10.01/rh73_gcc32/include -o
../../bin/nn2rootflux
nn2rootflux.o: In function `main':
/beo1/hubert/photonics_fit/src/nn2rootflux/nn2rootflux.cc:42: undefined
reference to `TObject::operator new(unsigned int)'
/beo1/hubert/photonics_fit/src/nn2rootflux/nn2rootflux.cc:42: undefined
reference to `TFile::TFile(char const *, char const *, char const *, int)'
/beo1/hubert/photonics_fit/src/nn2rootflux/nn2rootflux.cc:42: undefined
reference to `TObject::operator delete(void *)'
/beo1/hubert/photonics_fit/src/nn2rootflux/nn2rootflux.cc:46: undefined
reference to `TObject::operator new(unsigned int)'
/beo1/hubert/photonics_fit/src/nn2rootflux/nn2rootflux.cc:46: undefined
reference to `TTree::TTree(char const *, char const *, int)'
/beo1/hubert/photonics_fit/src/nn2rootflux/nn2rootflux.cc:46: undefined
reference to `TObject::operator delete(void *)'
/beo1/hubert/photonics_fit/src/nn2rootflux/nn2rootflux.cc:91: undefined
reference to `TObject::operator delete(void *)'
/beo1/hubert/photonics_fit/src/nn2rootflux/nn2rootflux.cc:91: undefined
reference to `TObject::operator delete(void *)'
collect2: ld returned 1 exit status
make: *** [../../bin/nn2rootflux] Error 1
what happens? and what can i do about it?
thanks!
daan
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